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Tag: dotnet-10

88 posts · Page 1 of 9

2026-10-07 errors dotnet testing

Fix: dotnet test falls back to VSTest in a Linux CI pipeline even though the project uses Microsoft.Testing.Platform

dotnet test picks its runner from global.json found by walking up from the working directory. On Linux CI it falls back to VSTest when that file is missing, misnamed, has a mis-cased key, or the SDK is older than 10.

2026-10-04 dotnet dotnet-10 csharp

How to add a strong-named assembly's full public key to InternalsVisibleTo in an SDK-style project

A signed assembly must name its friend by the full 320-character public key, not the token, or the build fails with CS1726 or CS0281. Get the key with sn -p and sn -tp, or with a cross-platform .NET script, then put it in the Key metadata of an InternalsVisibleTo item in the .csproj. Covers the PublicKey property fallback, Moq's DynamicProxyGenAssembly2 key, and the line-break trap.

2026-10-04 dotnet dotnet-10 csharp

How to detect Windows session lock, unlock, logon and logoff events in a C# app

Use SystemEvents.SessionSwitch in a desktop or console app, override OnSessionChange in a Windows service, or hook WM_WTSSESSION_CHANGE yourself. Covers .NET 10 code for all three, the hidden '.NET System Events' thread, why services see logon but desktop apps do not, out-of-order notifications, and how to query the current lock state with WTSQuerySessionInformation.

2026-10-04 ef-core ef-core-10 postgresql

How to set PostgreSQL session parameters such as search_path or statement_timeout on every EF Core connection with Npgsql

A SET statement run once is wiped by DISCARD ALL the moment Npgsql returns the connection to its pool. Put search_path and statement_timeout in the startup packet with the Search Path and Options connection string keywords, fall back to ALTER ROLE or a ConnectionOpened interceptor, and know why UsePhysicalConnectionInitializer silently loses its SET.

2026-10-01 errors dotnet testing

Fix: dotnet test exits with code 5 and "Zero tests ran" on Microsoft.Testing.Platform

Exit code 5 means MTP rejected a command-line option, not that tests are missing. Run the test exe directly to see the real error, then add the extension package or route the option per project.

2026-09-30 errors dotnet-cli launchsettings

Fix: launchSettings.json environment variables are ignored for a commandName: Executable profile

If your Executable profile runs dotnet run or dotnet watch, the inner command applies the default profile and overwrites your variables. Add --no-launch-profile, and use SDK 10.0.200+.

2026-09-29 errors dotnet dotnet-10

Fix: Android status bar icons become unreadable after enabling UseMaterial3 in .NET MAUI 10

MAUI 10.0.100 picks status bar icon colors from colorPrimary, which is the opposite brightness of the Material 3 surface, so you get white on white or black on black. Update Microsoft.Maui.Controls to 10.0.101 or later, or reset AppearanceLightStatusBars in MainActivity.

2026-09-29 errors blazor dotnet-watch

Fix: dotnet watch Blazor hot reload WebSocket fails on a custom local domain (403)

Since the September 2026 .NET SDKs (10.0.112, 10.0.401, 11 RC1), dotnet watch rejects browser-refresh WebSockets from unknown origins. Set DOTNET_WATCH_AUTO_RELOAD_WS_ORIGINS to your host name.

2026-09-28 errors dotnet dotnet-10

Fix: .NET MAUI Entry with Keyboard.Numeric shows a small numpad, then the full keyboard, on iPadOS 26

On iPadOS 26, MAUI maps Keyboard.Numeric to UIKeyboardType.DecimalPad, which now opens as a floating mini numpad. Append a mapper that switches iPad to NumbersAndPunctuation and filter input yourself.

2026-09-28 errors dotnet dotnet-10

Fix: MAUIR0001 MissingMethodException in .NET MAUI Resizetizer on an SVG with <filter> or <text>

MAUI 10.0.101 and 10.0.110 Resizetizer ship mismatched System.Memory references, so SVGs with filters or text fail. Pin Resizetizer 10.0.100 or strip the filter and text.